(3x-1)(4x+5)=

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Solution for (3x-1)(4x+5)= equation: 


Simplifying
(3x + -1)(4x + 5) = 0

Reorder the terms:
(-1 + 3x)(4x + 5) = 0

Reorder the terms:
(-1 + 3x)(5 + 4x) = 0

Multiply (-1 + 3x) * (5 + 4x)
(-1(5 + 4x) + 3x * (5 + 4x)) = 0
((5 * -1 + 4x * -1) + 3x * (5 + 4x)) = 0
((-5 + -4x) + 3x * (5 + 4x)) = 0
(-5 + -4x + (5 * 3x + 4x * 3x)) = 0
(-5 + -4x + (15x + 12x2)) = 0

Combine like terms: -4x + 15x = 11x
(-5 + 11x + 12x2) = 0

Solving
-5 + 11x + 12x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -4x)(1 + -3x) = 0


Subproblem 1
Set the factor '(-5 + -4x)' equal to zero and attempt to solve:

Simplifying
-5 + -4x = 0

Solving
-5 + -4x = 0

Move all terms containing x to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + -4x = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -4x = 0 + 5
-4x = 0 + 5

Combine like terms: 0 + 5 = 5
-4x = 5

Divide each side by '-4'.
x = -1.25

Simplifying
x = -1.25

Subproblem 2
Set the factor '(1 + -3x)' equal to zero and attempt to solve:

Simplifying
1 + -3x = 0

Solving
1 + -3x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + -3x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -3x = 0 + -1
-3x = 0 + -1

Combine like terms: 0 + -1 = -1
-3x = -1

Divide each side by '-3'.
x = 0.3333333333

Simplifying
x = 0.3333333333
Solution
x = {-1.25, 0.3333333333}

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